$timeout(function() {
    var sidebar = document.getElementById('sidebar');
    if (!sidebar || document.getElementById('sidebar-resizer')) {
        return;
    }

    var sidebarResizer = document.createElement('div');
    var desktopSidebarMedia = window.matchMedia('(min-width: 969px)');
    var activeSidebarPointer = null;
    var workingSidebarWidth = 0;

    sidebarResizer.id = 'sidebar-resizer';
    sidebarResizer.tabIndex = 0;
    sidebarResizer.setAttribute('role', 'separator');
    sidebarResizer.setAttribute('aria-orientation', 'vertical');
    sidebarResizer.setAttribute('aria-controls', 'sidebar');
    sidebarResizer.setAttribute('aria-label', 'Resize channel sidebar');
    sidebarResizer.setAttribute('aria-valuemin', '120');
    sidebarResizer.setAttribute('aria-valuemax', '480');
    sidebar.parentNode.insertBefore(sidebarResizer, sidebar.nextSibling);

    var maximumSidebarWidth = function() {
        return Math.min(480, window.innerWidth * 0.4);
    };

    var applySidebarWidth = function(value, limitToViewport) {
        var width = Number(value);
        if (!Number.isFinite(width) || width <= 0) {
            return;
        }

        width = Math.max(120, Math.min(limitToViewport ? maximumSidebarWidth() : 480, width));
        width = Math.round(width);
        document.documentElement.style.setProperty('--neorelay-sidebar-preferred-width', width + 'px');
        sidebarResizer.setAttribute('aria-valuenow', width);
        workingSidebarWidth = width;
    };

    applySidebarWidth(settings.neorelaySidebarWidth, false);

    sidebarResizer.addEventListener('pointerdown', function(event) {
        if (!desktopSidebarMedia.matches || event.button !== 0) {
            return;
        }

        activeSidebarPointer = event.pointerId;
        workingSidebarWidth = Math.round(sidebar.getBoundingClientRect().width);
        sidebarResizer.setPointerCapture(event.pointerId);
        document.body.classList.add('neorelay-sidebar-resizing');
        event.preventDefault();
    });

    sidebarResizer.addEventListener('pointermove', function(event) {
        if (event.pointerId === activeSidebarPointer && desktopSidebarMedia.matches) {
            applySidebarWidth(event.clientX, true);
        }
    });

    var finishSidebarResize = function(event) {
        if (event.pointerId !== activeSidebarPointer) {
            return;
        }

        activeSidebarPointer = null;
        document.body.classList.remove('neorelay-sidebar-resizing');
        if (workingSidebarWidth > 0) {
            settings.neorelaySidebarWidth = workingSidebarWidth;
        }
    };

    sidebarResizer.addEventListener('pointerup', finishSidebarResize);
    sidebarResizer.addEventListener('pointercancel', finishSidebarResize);
    sidebarResizer.addEventListener('keydown', function(event) {
        if (!desktopSidebarMedia.matches ||
                (event.key !== 'ArrowLeft' && event.key !== 'ArrowRight')) {
            return;
        }

        var direction = event.key === 'ArrowLeft' ? -1 : 1;
        var step = event.shiftKey ? 25 : 10;
        applySidebarWidth(sidebar.getBoundingClientRect().width + direction * step, true);
        settings.neorelaySidebarWidth = workingSidebarWidth;
        event.preventDefault();
    });
    }, 0);